National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

WAWONA (WWNC1)

Lat: 37.53447°NLon: 119.64497°WElev: 4309.0ft.

NA

42°F

6°C

Humidity 93%
Wind Speed S 8 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 26 Dec 03:51 AM PST
Extended Forecast for

9 Miles SSE Yosemite Valley CA

Flood Watch December 26, 04:00am until December 26, 04:00pm
Winter Storm Warning December 26, 04:00am until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
Winter Storm Warning
  •  
    Flood Watch December 26, 04:00am until December 26, 04:00pm
    Winter Storm Warning December 26, 04:00am until December 26, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 26 °F

    Snow Showers
    and Windy

  • Friday

    Friday: Snow showers. Some thunder is also possible. Temperature falling to around 21 by 4pm. Wind chill values as low as 5. Windy, with a southwest wind 20 to 30 mph decreasing to 10 to 20 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

    High: 27 °F⇓

    Snow Showers
    and Windy

  • Friday Night

    Friday Night: Snow showers, mainly before 10pm. Low around 16. South wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 16 °F

    Snow Showers
    then Chance
    Snow Showers

  • Saturday

    Saturday: Sunny and cold, with a high near 26. Wind chill values as low as 7. Southeast wind around 5 mph becoming calm in the morning.

    High: 26 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 18. Northeast wind 10 to 15 mph.

    Low: 18 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and cold, with a high near 32. East northeast wind 5 to 15 mph becoming southwest in the afternoon.

    High: 32 °F

    Cold

  • Sunday Night

    Sunday Night: Clear, with a low around 24. Northeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 35. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 35 °F

    Sunny

Detailed Forecast

Overnight
Snow showers. Some thunder is also possible. Steady temperature around 26. Wind chill values as low as 9. Windy, with a southwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 13 to 19 inches possible.
Friday
Snow showers. Some thunder is also possible. Temperature falling to around 21 by 4pm. Wind chill values as low as 5. Windy, with a southwest wind 20 to 30 mph decreasing to 10 to 20 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Friday Night
Snow showers, mainly before 10pm. Low around 16. South wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday
Sunny and cold, with a high near 26. Wind chill values as low as 7. Southeast wind around 5 mph becoming calm in the morning.
Saturday Night
Mostly clear, with a low around 18. Northeast wind 10 to 15 mph.
Sunday
Sunny and cold, with a high near 32. East northeast wind 5 to 15 mph becoming southwest in the afternoon.
Sunday Night
Clear, with a low around 24. Northeast wind around 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 35. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 28. Blustery, with an east northeast wind 15 to 20 mph.
Tuesday
Sunny, with a high near 38. North northeast wind 10 to 15 mph decreasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 31. Northeast wind 10 to 15 mph.
Wednesday
Sunny, with a high near 39. Northeast wind 5 to 10 mph becoming light and variable in the afternoon.
Wednesday Night
A 20 percent chance of snow. Partly cloudy, with a low around 31. Northeast wind around 5 mph.
New Year's Day
A 30 percent chance of snow. Partly sunny, with a high near 34. Northeast wind around 5 mph becoming southwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SSE Yosemite Valley CA
 37.62°N 119.54°W (Elev. 9058 ft)
Last Update:
3:57 am PST Dec 26, 2025
Forecast Valid:
4am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation